Top relief valve for sulphite digesters



June 2, 1931. L. WIMMER v 1,808,092

TOP RELIEF VALVE FO R SULPHI' I'E DIGESTERS Filed July 21, 1930 2 Sheets-Sheet 1 June 2, 1931. WIMMER ,8

TOP RELIEF VALVE FOR SULPHITE DIGESTERS Filed July 21, 1930 2 Sheets-Sheet 2 .5. W .13 r s v 1:601" eopoZd WW Patented June 2, 1931 i I UNITED STATES PATENT OFFICE LEoroLn WIMMER, or Muskneou, MICHIGAN iron RELIEF VALVE FOR SULPHITE mensrnns Application filed July 21, 1930. Serial Nb. 469,537.

- The object of my invention is to provide 7. Plug 10 is provided with a squared end a novel and efficient top relief valve for use 11 for engagement by a wrench at its upper in sulphite digesters to regulate the flow of end, and its lower end is integral with the fluid under pressure during the cooking pehollow valve 8. riod, such as the relief flow on top of sul-. I provide a central chamber 15 through 55 phite digesters; or to regulate other high the plug and terminating inthe cupped pressure flows where there is a requirement portion 14 of relief valve 8. I provide a nut for an exact knowledge of the amount of flow 16 mounted in the chamber at the upper end going through a plug valve at different of the plug valve to support a thermometer 10 times; and to provide a device which will en- 17 60 l able'the operator to change the size of the As shown in Fig. 2, I provide oil channels stream flowing through the valve to a larger 13 radiating through the valve plug 10 from or smaller stream at any time it requires. the central chamber to the annular pack- I attain these and other objects of my in-' ing 22.'which is positioned under the packing l5 vention by the apparatus illustrated in the gland 19. I also provide additional oil chan- 65 accompanying drawings, in which,- nels 12 formed in the shouldered portion 7 Figure 1 is a side elevation; of the valve plug, as shown in Fig. 2. The Fig. 2 is a vertical section; annular packing gland 19 is provided with Fig. 3 is a horizontal section on line 22 ears 20 corresponding in shape and size with of Fig. 2; the ears 6 of the valve casing 4 and function- 70 Fig. 4 is a longitudinal section on line ing as means to fasten the gland to the valve 33 of Fig. 2; and casing by suitable bolts 21. Fig. 5 is a perspective view of the relief The conical shape of the casing 5 permits valve removed from the valve casing. a tight fit of the relief valve 8 in the casing. 75

Like numerals designate like-partsin each The provision of thepacking 22 and the of the several views. packing gland 19 prevents any leakage oc- Referring to the accompanying drawings, curring between the sides of the casing and I provide a valve casing 4 having the lower the plug end of the valve. By tightening portion 5 thereof frusto-conical in shape and the packing gland it also holds down the adapted to receive the. correspondingly plug tight against the casing as the plug is 30 shaped revoluble relief valve 8, as shown in enlarged at7. .Fig. 5, which valve is provided with any suit- In operation the relief valve is revolved able number of openings 9 of different by turning the plug end 10 to bring the desizes, as shown in Fig. 2, and arranged to be sired size of opening 9 into alignment with brought into alignment with the passage18, the passage 18 to change the inlet or outlet 85 or which can be closed by turning the plug streams from small to large or from large to end 10 of plug valve 8 against passage 18. small. In operating the device a wrench is The relief valve 8 is provided with a cenapplied to the squared end 11 of the plug end tral cupped portion 14 to form an extension 10 of the valve to revolve the relief valve 8,

of the chamber 15 through the plug 10 to with which the plug 10 is integral.

receive the thermometer 17 The inlet or outlet at the bottom of the i The conical portion 5 of the valve casing is plug valve 8 is of similar diameter to the provided with a bottom annular flange 2 by channel 3.

means of which it is bolted or riveted to the My plug valve also can be used on low 'digester tank 1. I provide a large passage pressure flows, such as water and 011s, pulp 3 to the hollow portion of the revoluble re and paper material, or other flows where lief valve 8, as shown in Fig. 2. exact measure is required. 7

Mounted in the upper portion 4 of the If no thermometer is used a plug 16 1s valve casing is a plug 10 which is provided provided as shown in Fig. 5, to prevent oilv with an annular shoulder or'enlargement at from escaping through should there be pressure caused by the heat of passing hot gases, etc.

What I claim is:

1. In a device of the class described, the combination of a valve casing having a frusto-conical lower portion and having an end opening and a lateral opening, a revoluble valve seated in the casing, said valve having a series of alined openings of difi'erent sizes adapted to be brought into communication with the lateral opening of the valve casing, a valve plug integral with the valve and having a shouldered portion, radiating oil passages in said valve plug, a packing positioned above the shoulder of the plug, and a packing gland adapted to be fastened to the casing and seating on the packing.

2. In a. device of the class described, the combination of a valve casing conical in its lower portion, and having an end opening and a lateral opening, a revoluble hollow valve seated in the casing said valve having a plurality of alined openings of different sizes adapted to register with the lateral opening of the'valve casing, a plug end integral with the valve and having an annular shoulder, radiating oil passages in the plug end of the valve, a packing, and a packing gland adapted to be fastened to the casing and seating on the packing, the valve plug having a central chamber, the valve having a recessed portion forming a chamber in alinement with the central chamber of the plug end of the valve and adapted to receive a thermometer, the aforesaid thermometer, and means for supporting the thermometer.

3. In a device of the. class described, the combination of a valve casing having its lower portion frusto-conical, and having an end opening and a lateral opening, a hollow I revoluble valve seated inthe casing'saidvalve having a series of horizontally alined openings of difierent sizes, all being adapted to be brought into registration with the lateral opening through the valve casing, a valve plug integral with the valve, radiating oil passages in the plug end of the valve, a packing positioned above a shouldered portion of the plug end of the valve, a packing gland adapted to be fastened to the casing and seating on said packing, the valve plug having a central chamber, the valve having a recessed portion forming a chamber in alinement with the central chamber of the valve plug and adapted to receive a thermometer, a nut having threaded engagement with the upper end of the valve plug, and adapted to close same when the thermometer is not used.

LEOPOLD WIMMER. 

